How an established UK clinic turned its clinical authority into search authority
Promis is a respected London and Kent addiction and mental-health clinic with a strong domain, but it wasn’t capturing the searches its expertise deserved. A content-led program grew organic traffic from 171 to 1,325 monthly visitors and took it to #1 for the terms that matter most to a private clinic, including "mental health retreat uk" and "complex ptsd residential treatment uk".
Source: Ahrefs, site-level metrics on the same query at the start and the end of the engagement (mode: subdomains, monthly search volume).
Built to work on every screen
Before and after
Promis
Promis runs private addiction and mental-health treatment in London and at Promis Hay Farm in Kent, with a long clinical heritage and an already-authoritative website. The challenge was not credibility, it was capture: a trusted brand that wasn’t ranking for the high-volume mental-health and addiction questions its clinicians are expert in answering.
Authority without capture
- !A strong domain, underused. Promis already had high authority (Domain Rating 57) but ranked for few of the searches that matter.
- !High-value conditions. Mental-health terms like "eupd" carry tens of thousands of monthly searches.
- !A content gap between the clinic’s real expertise and what was published and ranking.
Convert clinical expertise into ranked, useful content
The challenge
- ×Low capture. 171 monthly visitors and only 7 top-three rankings despite a strong domain.
- ×Untapped authority. High Domain Rating that wasn’t translating into rankings.
- ×A broad clinical remit across addiction and mental-health conditions, none well covered.
The opportunity
- ✓Own condition-level searches. Terms like "eupd" and "reactive depression" were winnable and high-volume.
- ✓Leverage existing authority. A strong domain means new content can rank quickly.
- ✓Build a durable footprint on genuinely expert, clinically-grounded content.
Expert content on an authoritative domain
We mapped the conditions Promis treats to the searches people make, then published the expert content the domain’s authority could rank fast.
Audit & opportunity mapping
We audited the site and mapped its clinical expertise against the highest-volume, winnable addiction and mental-health searches.
Condition & treatment content
We published in-depth, clinically-grounded content on the conditions Promis treats, from personality disorders to depression and addiction.
Authority & internal linking
We used the domain’s existing authority and a tight internal-linking structure to push new content onto page one quickly and into the top three.
Continuous optimization
We tracked Ahrefs visibility and kept expanding the winning clusters, driving sustained growth right through to the end of the engagement.
Authority, finally captured
With the right content, the domain’s authority converted into rankings, and traffic grew almost eightfold.
| Metric | At the start | At the end of the engagement | Growth |
|---|---|---|---|
| Monthly organic visitors | 171 | 1,325 | ▲ +675% |
| Total ranking keywords | 514 | 1,965 | ▲ +282% |
| Keywords in the top 3 | 7 | 25 | ▲ +257% |
| Monthly organic traffic value | $259 | $951 | ▲ +267% |
Source: Ahrefs, site-level metrics on the same query at both dates (mode: subdomains, monthly search volume). Domain Rating held steady across the engagement, which is what makes this a content result rather than a link-building one. The chart below plots the monthly traffic series, whose values differ slightly from these point-in-time figures.
Monthly organic visitors, across the engagement
The real monthly organic-traffic curve from Ahrefs: steady, sustained growth, still climbing at the end.
Ranking #1 for the searches that fill beds
By the end of the engagement Promis held the top spot for the highest-volume private-treatment searches in the UK.
A selection of positions held at the end of the engagement, from 1,965 ranking keywords (25 in the top 3). Positions per Ahrefs, country GB.
Page one for the searches that fill beds
Ranking at the top for private residential and retreat searches puts Promis in front of the exact people it can help, at the moment they search.
The top spot for the highest-volume private-treatment search in the UK, alongside #1 for complex PTSD and private residential mental health facilities.
From 171 to 1,325 monthly visitors, with traffic value up 267% to $951/mo.
Growth came from content, not links (Domain Rating held flat), so it is stable and keeps compounding.
Recognized & certified
Sitting on an authoritative domain that isn’t ranking?
We work with one treatment provider per area. Start with a free, compliance-aware rehab SEO audit and a clear plan to grow admissions.
Get a free audit →